Photomedicine


Photomedicine uses special optical radiation sources for therapeutic, diagnostic, endoscopic, illumination purposes. OHSP350UV (UV radiance meter) Series produces a wide range of measuring instruments that measure the intensity and efficacy of these sources. There follows some example applications using OHSP350UV Series products


Photomedicine uses special optical radiation sources for Blue light therapeutic, diagnostic, endoscopic, illumination and dental curing purposes. OHSP350B (Blue light meter ) Series produces a wide range of measuring instruments that measure the intensity and efficacy of these sources. There follows some example applications using OHSP350B Series products



The spectrometer integrates spectrum and irradiance test functions. It adopts WIFI connection to achieve wireless remote operation. It is widely used in UV light sources, disinfection, light treatment, aging, flaw detection, lithography, and light curing. , Breeding, plant , solar UV index evaluation, etc.






Who is our solution for ?

  • Measurement of effective irradiance in bilirubin phototherapy

  • Irradiance measurement of UV LED curing equipment

  • Measurement and evaluation of UV radiation during arc welding

  • Assessment of blue light hazard from artificial light sources

OHSP350B Blue light Measurement of effective irradiance in bilirubin phototherapy (mW/cm2)

Blue light phototherapy is widely used for the treatment for neonatal hyperbilirubinaemia, a condition in which there is too much bilirubin in the blood. This causes a yellowing of the infant’s skin, known as jaundice. Effective phototherapy requires sufficiently high irradiance with appropriate wavelengths, generally accepted as ‘blue light’ over a large effective treatment area.
Neonatal phototherapy has been widely used for more than 50 years employing many lighting technologies including various fluorescent tube types, tungsten halogen and metal halide lamps as well as LED based units which are becoming increasingly commonplace. This diverse range of treatment lamps produces widely differing spectral outputs. Unfortunately, there is no universally accepted ‘action spectra’ or agreement on the most effective wavelengths which has resulted in rather poor quality dosimetry and radiometry in this field over the years.

OHSP350UV Irradiance measurement of UV LED curing equipment


UV LED lamps are being enthusiastically developed and adopted as alternatives to the medium pressure mercury lamps traditionally used for UV curingprocesses. UV LED curing offers several potential advantages including reduced power consumption, less heat generation, instant switching, longer lifetimes, as well as the environmental benefit of being mercury-free. UV radiometers are widely used to monitor and control the UV exposure (or ‘dose’) from high-intensity gas discharge lamps on work surfaces. However, UV LED devices emit a narrow spectrum of radiation (typically ±10 nm), whereas mercury lamps have a much broader spectral distribution. This has significant implications for the design and calibration of radiometers if they are to be suitable for measuring the irradiance of UV LED curing equipment
.

OHSP350 UV Irradiance Compact integrating sphere for total flux of radial emitting fibres used for photodynamic therapy

Photodynamic therapy (PDT) can be used to treat certain types of cancer as well as some skin and eye conditions. In PDT abnormal cells are destroyed by the use of light-sensitive medication, known as photosensitizers, in conjunction with a suitable light source. Typically, the activation spectrum of the photosensitizer falls within the 630nm to 850nm wavelength range. Individually, the photosensitizer medication and light source are harmless, but when the medication is exposed to the light in the presence of tissue oxygen, it activates and causes a reaction that damages the nearby cells.


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